Adpcm digital circuit multiplication equipment using adpcm and dsi 使用自适应差分脉冲编码调制
Differential pulse code modulation 差分脉冲编码调制差分脉码调制
The speech quality produced by g . 729a is equivalent to that of 32kbits / s adpcm for most operating conditions , achieving the request of long - distance telephone G . 729a具有非常好的性能,其语音质量与32kbit / s自适应差分脉冲编码调制( adpcm )算法相当,达到了长途电话质量要求。